Trace number 1523821

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
NCVWr 2009-03-22SAT 0.258959 0.258031

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/420/
unif-k3-r4.25-v420-c1785-S1014608490-038.cnf
MD5SUMfa87bf22946652bd235c5205438c2d39
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010997
Satisfiable
(Un)Satisfiability was proved
Number of variables420
Number of clauses1785
Sum of the clauses size5355
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31785
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.19/0.25	c try 1 flip j 170515
0.19/0.25	c A solution is found
0.19/0.25	s SATISFIABLE
0.19/0.25	v 1 2 3 -4 5 6 7 -8 9 -10 -11 -12 13 14 15 16 17 -18 19 20 -21 22 23 24 -25 -26 -27 -28 29 -30 31 -32 -33 34 35 -36 -37 -38 -39 -40 41 42 -43 -44 45 -46 47 -48 49 50 51 52 53 54 55 56 -57 58 59 -60 -61 -62 63 -64 65 66 -67 -68 -69 -70 -71 -72 73 -74 75 76 77 -78 -79 -80 -81 -82 83 -84 85 -86 -87 88 89 -90 -91 92 -93 94 95 -96 -97 -98 -99 -100 101 102 -103 -104 -105 -106 -107 -108 109 110 -111 112 113 -114 -115 116 117 -118 -119 -120 -121 -122 -123 124 125 126 -127 -128 129 130 131 -132 133 134 135 -136 -137 138 -139 -140 -141 -142 143 144 -145 146 147 148 149 -150 151 -152 153 154 155 -156 157 -158 159 160 161 162 163 164 -165 -166 167 -168 -169 170 171 -172 -173 174 175 176 -177 -178 179 180 -181 -182 183 184 185 -186 -187 188 189 190 -191 192 -193 194 -195 196 -197 198 199 200 -201 -202 -203 204 -205 -206 207 208 -209 -210 -211 212 213 -214 215 216 -217 218 -219 220 -221 -222 223 -224 225 226 227 228 -229 -230 231 232 233 -234 -235 -236 -237 -238 -239 -240 241 -242 -243 244 -245 246 -247 248 -249 250 251 252 -253 -254 255 256 -257 -258 259 260 -261 262 263 -264 -265 -266 267 268 269 -270 271 272 273 274 -275 -276 -277 278 -279 280 -281 282 -283 -284 285 286 287 -288 -289 -290 291 -292 -293 -294 -295 296 297 298 -299 -300 301 -302 303 304 -305 -306 -307 -308 -309 -310 311 312 -313 314 -315 -316 317 -318 319 320 321 -322 323 -324 -325 -326 327 -328 -329 330 331 332 -333 -334 335 -336 -337 -338 -339 340 341 -342 -343 -344 345 346 347 348 349 -350 351 352 -353 354 355 -356 -357 -358 -359 360 361 362 363 364 -365 366 -367 -368 -369 -370 -371 -372 -373 374 -375 376 377 378 -379 380 381 -382 383 384 -385 386 -387 -388 389 390 -391 392 393 -394 395 -396 -397 398 399 -400 -401 -402 -403 404 405 -406 -407 408 409 410 411 412 -413 -414 -415 416 -417 -418 419 -420 
0.19/0.25	v 0 
0.19/0.25	c Done (mycputime is 0.250 seconds)

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1523821-1238575770/watcher-1523821-1238575770 -o /tmp/evaluation-result-1523821-1238575770/solver-1523821-1238575770 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523821-1238575770.cnf 527892509 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.83 1.82 1.44 3/65 24121
/proc/meminfo: memFree=1203136/2055920 swapFree=4191900/4192956
[pid=24121] ppid=24119 vsize=411880 CPUtime=0
/proc/24121/stat : 24121 (NCVWr) R 24119 24121 24026 0 -1 4194304 140 0 0 0 0 0 0 0 18 0 1 0 341297787 421765120 124 1992294400 134512640 135113558 4294956208 18446744073709551615 134526366 0 0 4096 0 0 0 0 17 1 0 0
/proc/24121/statm: 102970 124 55 146 0 101845 0

[startup+0.0421981 s]
/proc/loadavg: 1.83 1.82 1.44 3/65 24121
/proc/meminfo: memFree=1203136/2055920 swapFree=4191900/4192956
[pid=24121] ppid=24119 vsize=415944 CPUtime=0.04
/proc/24121/stat : 24121 (NCVWr) R 24119 24121 24026 0 -1 4194304 202 0 0 0 4 0 0 0 18 0 1 0 341297787 425926656 186 1992294400 134512640 135113558 4294956208 18446744073709551615 134520831 0 0 4096 0 0 0 0 17 1 0 0
/proc/24121/statm: 103986 186 58 146 0 102861 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 415944

[startup+0.101204 s]
/proc/loadavg: 1.83 1.82 1.44 3/65 24121
/proc/meminfo: memFree=1203136/2055920 swapFree=4191900/4192956
[pid=24121] ppid=24119 vsize=415944 CPUtime=0.09
/proc/24121/stat : 24121 (NCVWr) R 24119 24121 24026 0 -1 4194304 202 0 0 0 9 0 0 0 18 0 1 0 341297787 425926656 186 1992294400 134512640 135113558 4294956208 18446744073709551615 134521094 0 0 4096 0 0 0 0 17 1 0 0
/proc/24121/statm: 103986 186 58 146 0 102861 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 415944

Solver just ended. Dumping a history of the last processes samples

[startup+0.201217 s]
/proc/loadavg: 1.83 1.82 1.44 3/65 24121
/proc/meminfo: memFree=1203136/2055920 swapFree=4191900/4192956
[pid=24121] ppid=24119 vsize=415944 CPUtime=0.19
/proc/24121/stat : 24121 (NCVWr) R 24119 24121 24026 0 -1 4194304 202 0 0 0 19 0 0 0 18 0 1 0 341297787 425926656 186 1992294400 134512640 135113558 4294956208 18446744073709551615 134533987 0 0 4096 0 0 0 0 17 1 0 0
/proc/24121/statm: 103986 186 58 146 0 102861 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 415944

Child status: 10
Real time (s): 0.258031
CPU time (s): 0.258959
CPU user time (s): 0.25696
CPU system time (s): 0.001999
CPU usage (%): 100.36
Max. virtual memory (cumulated for all children) (KiB): 415944

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.25696
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 217
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 2
involuntary context switches= 1

runsolver used 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node54 at 2009-04-01 10:49:30
IDJOB=1523821
IDBENCH=70671
IDSOLVER=531
FILE ID=node54/1523821-1238575770
PBS_JOBID= 9062208
Free space on /tmp= 66492 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/420/unif-k3-r4.25-v420-c1785-S1014608490-038.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523821-1238575770/watcher-1523821-1238575770 -o /tmp/evaluation-result-1523821-1238575770/solver-1523821-1238575770 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523821-1238575770.cnf 527892509

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= fa87bf22946652bd235c5205438c2d39
RANDOM SEED=527892509

node54.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.232
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.232
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1203552 kB
Buffers:         97088 kB
Cached:         656092 kB
SwapCached:        260 kB
Active:         294168 kB
Inactive:       474168 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1203552 kB
SwapTotal:     4192956 kB
SwapFree:      4191900 kB
Dirty:            4612 kB
Writeback:           0 kB
Mapped:          23728 kB
Slab:            69932 kB
Committed_AS:  1085204 kB
PageTables:       1372 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66488 MiB
End job on node54 at 2009-04-01 10:49:31